Bjorn_L

Bjorn_L

Lives in United States Seattle, WA, United States
Joined on Jul 29, 2009
About me:

Current Cameras:
Nikon d700 with a number of lenses.
Nikon d90 with a number of lenses.
Panasonic tz7
and a couple of older dust collectors.
Previous Cameras:
Mostly Minolta film cameras (and 1 Canon), Minolta 7d, Canon 500d (aka T1i), and a close to a dozen bridge and pocket cameras. My favorite was the Minolta 7i.

Comments

Total: 80, showing: 1 – 20
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On What is equivalence and why should I care? article (1565 comments in total)

Interesting write up. Nicely done. This is a topic which gets flogged to death in the forums (typically with more passion than facts); it will be nice to have a well written article to refer to.

Direct link | Posted on Jul 7, 2014 at 21:19 UTC as 197th comment | 2 replies
On Panasonic Lumix DMC-FZ1000 First Impressions Review preview (1238 comments in total)

the big things to me are:
Panasonic = Not weather sealed
Sony = weather sealed

Sony for most of the range needs about 1/2 the light to produce the same exposure settings. It is close to 1 stop faster at most focal lengths.

They both stink at battery life but the Panasonic stinks more (320 v 420 cipa shots)

The sony lens is a little wider, the Panasonic is longer. But the Panasonic over all range of 71.5 to 5.2 vs 73.7 to 10.3 (angle of view) is better.

The real difference maker is likely to be the price. 1300 vs 900 because while the Sony is clearly the better camera is it worth 400 more? Not to most people.

Direct link | Posted on Jun 12, 2014 at 08:37 UTC as 304th comment | 4 replies
On Sony SLT-A77 II First Impressions Review preview (596 comments in total)
In reply to:

Vitruvius: Top of page 4 - the SLT mirror does NOT redirect 1/3 of the light. It is about 1/3 of a stop of light.

Interesting that they would NOT have included the on-sensor phase detect AF from the a6000 in this camera in addition to the SLT AF sensors. I have about 7000+ actuation shooting action with my A77 and the AF tracking is actually very poor even with fast lenses and SSM / HSM.The only reason I would have spent an extra $400 on the new A77ii was for the same AF system as the a6000. I wonder why they would not have included this on the A77ii? If it is the same sensor why can't they combine the information from both AF systems? But I guess we will have to see how they compare.

1 stop = halving or doubling the light. So 1/3 stop would be 1/6th of the available light.

Direct link | Posted on May 15, 2014 at 19:43 UTC

Except for battery life it seems to be a well specified camera. But given Sony's recent support for a different mount it is a little confusing to see a camera maker competing with itself with two incompatible mounts.

Direct link | Posted on May 1, 2014 at 19:00 UTC as 10th comment | 7 replies

Amazing photos. I've gone back and enjoyed them several times. #1 is the one I find most interesting.

Direct link | Posted on Apr 29, 2014 at 03:14 UTC as 8th comment
In reply to:

beavertown: 900 buck for this cheap crap???

digifan, you forgot the equivalent aperture won't be as good on the M4/3 and it will only go to 300mm (equiv)... So you're comparing a 27-450 f5.6-10 to a 28-300 f8-f11
Also as I recall the 14-150 isn't that great optically.
I'm sure this Nikon super-zo0m won't be much better. I wouldn't want either one.

Direct link | Posted on Apr 10, 2014 at 15:17 UTC
In reply to:

raztec: Way to go Nikon. Keep sinking to the bottom of the consumer barrel. While Sigma puts out a constant f1.8 18-35mm zoom you keep sinking lower and lower into the depths of hyperzoom despair. Soon you will be the laughing stock of all photography.

Not exacttly ebsilon. This lens is f6.3 not f5.6 at the long end. Not that it matters these super-zoom lenses are not exactly built with image quality in mind.

Direct link | Posted on Apr 10, 2014 at 15:08 UTC

The bigger issue then what % you get is how MUCH you get. Meaning 15% of a billion is more the 50% of a million. 500px has not be a major player in selling photos. What new marketing efforts are they putting out other then this attempt to get photographers excited about 30% of what thus far has been a rather small number.
Getty (for example) might take a big huge cut but they also tend to sell alot of photos.

Direct link | Posted on Feb 8, 2014 at 11:01 UTC as 41st comment | 1 reply

How is this the first weather resistant superzoom? The Sony Cyber-shot DSC-RX10 has been out for 4 months and is also sealed.

Direct link | Posted on Jan 6, 2014 at 08:13 UTC as 29th comment | 5 replies
On Marmot_sunning photo in Bjorn_L's photo gallery (1 comment in total)

Yes this was taken with a 20mm (and cropped down a bit). I managed to creep almost right up to it. I took the photo right as it noticed me and spun around.

Direct link | Posted on Dec 10, 2013 at 20:02 UTC as 1st comment
On DPReview Top Picks: Stand-out third party lenses article (80 comments in total)

Correction needed:
On the Sigma 120-300 you say
"... but it's not weatherproofed..."
Problem is, it is weather sealed, the older model with out OS is not weather sealed.

Direct link | Posted on Nov 28, 2013 at 19:56 UTC as 34th comment | 1 reply
On Tamron to develop 150-600mm F5-6.3 ultra-telephoto zoom article (193 comments in total)
In reply to:

dlkeller: If Tamron leaves the VC off this lens as they have their 18-270 PZD for Sony mounts I am through with their company forever! Otherwise, it is definitely on my wish list.

Dave Oddie: I said 'automatically'. I know it is possible to disable in camera and in lens and to switch back and forth as the mood strikes you. But not everyone will remember. I suspect this will lead to grumpy customers, possible returns, and generally add either a mild to severe cost for Tamron with no real payoff for including it. Remember due to Sony's rather distant position in marketshare added costs are a problem. I know first hand how easy it is to forget. I was playing with an older Sony (optical viewfinder) and a Sigma 150-500mm OS owned by a friend.
I've owned in camera and in lens. For shorter FL's, there is no difference except for the lack of a stabilized viewfnder. For longer FLs in lens is more effective. I wish Nikon or Canon would add in camera to compliment in lens since they seem to have no inclination to stabilize their fast (low light) primes. Ah well, nothings perfect.

Direct link | Posted on Nov 8, 2013 at 23:58 UTC
On Tamron to develop 150-600mm F5-6.3 ultra-telephoto zoom article (193 comments in total)
In reply to:

yabokkie: this 150-600 at 600/6.3 on a 35mm format sensor will work almost the same as a 200-400 at 400/4 on APS-C (= 640/6.4 equiv.). so it'll be a great lens even with relatively lower resolution.

then the issue will be more AF speed and service
... as well as relatively low frame rate of 5D3 and D600.

Tamron at least claims fast-focus for the lens.

Direct link | Posted on Nov 8, 2013 at 00:29 UTC
On Tamron to develop 150-600mm F5-6.3 ultra-telephoto zoom article (193 comments in total)
In reply to:

ragmanjin: This seems like it would be perfectly paired with the new Pentax K-3 for birders and the like, why do you figure they wouldn't bother with a K-mount version?

They will probably eventually make a Pentax version but Pentax has such a small market that users will always have fewer choices. If you want every thing to be available for your camera you have to shoot Canon or Nikon. That's not a judgement just economics.

Direct link | Posted on Nov 8, 2013 at 00:28 UTC
On Tamron to develop 150-600mm F5-6.3 ultra-telephoto zoom article (193 comments in total)
In reply to:

dlkeller: If Tamron leaves the VC off this lens as they have their 18-270 PZD for Sony mounts I am through with their company forever! Otherwise, it is definitely on my wish list.

I understand your frustration since in lens 'VC' is more effective then in camera on longer lenses. But I do not believe Sony has a provision for picking which stabilization to use. Until they make the in camera automatically shut itself off when it detects (or is told) about in lens, the lens makers have little choice but to ship their Sony lenses without stabilization.

Direct link | Posted on Nov 8, 2013 at 00:24 UTC
On Tamron to develop 150-600mm F5-6.3 ultra-telephoto zoom article (193 comments in total)
In reply to:

Zoron: This is cool.....but i would rather buy a sigma 120-300 f2.8 and slap on a 2X extender.

I am a big fan of the Sigma 120-300 f2.8. I have not been able to try the newer version (only the older one without weather sealing and without stabilization). The problem with the idea you suggested is not the Sigma lens but the very poor Sigma TC. I tried it and thought something was wrong since most every shot seemed soft. But I later saw someone do a more careful comparison between the Sigma 50-500mm OS and the Sigma 120-300mm f2.8 with Sigma's 2x TC (all were the newest version). With both set to 500mm the much cheaper Sigma 50-500 was ALOT sharper. I strongly suspect the the Tamron 150-600mm will also be sharper then the 120-300 +TC.

Direct link | Posted on Nov 8, 2013 at 00:03 UTC
On Canon EOS 70D Review preview (623 comments in total)
In reply to:

Bjorn_L: Strange that DPR seems at odds with DXOs measurements. For example DR. DXO says it is poor, you say it is good. Are you or are you not partnered with DXO?

DXO's results say this sensor is about the same as the rather ancient 50d.

Canon Canon Canon
70d 60d 50d
overall 68 66 63
Color bit 22.5 22.2 21.8
DR evs 11.6 11.5 11.4
ISO 926 813 696

This is 0.7 bits more color detail, 0.2 Evs more DR and less then 1/3rd stop better in ISO.

Lagging well behind every current offering from Sony, Pentax and Nikon. Even the smaller sensor Olympus OM-D E-M1 and Panasonic GH3 best it in every category except ISO (where the Canon has a 1/7th to 1/5th stop advantage, which is fairly trivial compared to the difference between the 70d and its "same sized sensor" peers.

I am impressed by many details about the 70d and by the camera as a whole, but some of your comments are baffling.

@Segaman
I shot Canon DSLR and film bodies and Minolta DSLRs and film bodies before I shot Nikon.
I was a reluctant Nikon convert as I had glass for other mounts and friends who shot mostly Canon.

Direct link | Posted on Nov 1, 2013 at 01:44 UTC
On Canon EOS 70D Review preview (623 comments in total)
In reply to:

JimBob0: Is anyone here a real photographer? You know, someone who actually takes good photographs? Or does everyone just argue about minor specification details that no one will ever see or notice in a photograph?

I'm beginning to worry that too many commentators can only take a good photograph if they have the very best camera to do it rather than actually having the skill or talent to take a good photo in the first place.

Too many dull nerds here.

Apparently you missed the point of a camera review. It is evaluate a camera not the photographer.

Direct link | Posted on Oct 31, 2013 at 15:09 UTC
On Canon EOS 70D Review preview (623 comments in total)

Strange that DPR seems at odds with DXOs measurements. For example DR. DXO says it is poor, you say it is good. Are you or are you not partnered with DXO?

DXO's results say this sensor is about the same as the rather ancient 50d.

Canon Canon Canon
70d 60d 50d
overall 68 66 63
Color bit 22.5 22.2 21.8
DR evs 11.6 11.5 11.4
ISO 926 813 696

This is 0.7 bits more color detail, 0.2 Evs more DR and less then 1/3rd stop better in ISO.

Lagging well behind every current offering from Sony, Pentax and Nikon. Even the smaller sensor Olympus OM-D E-M1 and Panasonic GH3 best it in every category except ISO (where the Canon has a 1/7th to 1/5th stop advantage, which is fairly trivial compared to the difference between the 70d and its "same sized sensor" peers.

I am impressed by many details about the 70d and by the camera as a whole, but some of your comments are baffling.

Direct link | Posted on Oct 31, 2013 at 14:25 UTC as 158th comment | 4 replies
On Canon EOS 70D Review preview (623 comments in total)
In reply to:

makofoto: Test video clip with the 18/135 STM lens on the 70D ... see how it holds focus as I zoom in at the end:

http://www.youtube.com/watch?v=NfbxMfSQk14

I appreciate you posting your video but it does not really demonstrate anything superlative about the camera. The camera work and shooting in to the light resulted in a video which taken on its own was not very good.
A for effort though.

Direct link | Posted on Oct 31, 2013 at 04:14 UTC
Total: 80, showing: 1 – 20
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